Tube frame for axminster looms



June 19, 1928.

E. E. CLARK TUBE FRAME FOR AXMINSTER LOOMS Filed Dec. 13, 1926 Patented June 19, 1928.

* UNITED STATES P EVERETT E. CLARK, OF WORCESTER,

MASSACHUSETTS.

- TUBE FRAME FOR Application filed December Thisinvention relates to improvements in tube frames for Axminster looms, and it is the principal object of the invention to provide a form of book suspension member which will prevent loosening of the securing -screws by which the same is held to the bracket of the tube frame.

Tube frames for Axminster looms are provided with brackets which serve in part to support the yarn spools and in part to have contact with the transporting endless chains of the Axminster loom. Each bracket, as usually made, has a flat spring hook member held to the bracket at the lower end thereof by screws and having the upper end bent to lie over one of the links of the trans-- porting chain. The bracket is formed with an offset chain engaging tongue through a portion of which the spring hook member extends and it is found that as the chain carries the tube frames over the tops of guiding sprockets, the spring is subjected to lateral strains which in time loosen the securing screws. It is an important object of my present invention to provide the spring hook member with a slight deformation adj acent the securing screws, the deformation being preferably in the form of a curve which is flattened out by the screws. The natural resilience of the spring hook exerts a constant pressure against the screws and tends to prevent them from turning.

With these and other objects which will appear as the description proceeds my invention resides in the combinations and ar rangementsset forth hereinafter and pointed out in the claims.

In the accompanying drawings, wherein two forms of the invention are shown:

Fig. 1 is a front elevation of one end of the tube frame having the preferred form of my invention applied thereto, certain parts being in section,

Fig. 2 is an end elevation taken in the direction of arrow 2, Fig. 1,

Fig. 3 is an enlarged detail front elevation looking in the direction of arrow 3, Fig. 2 showing the lower end of the bracket with double springs, with the latter in the position they assume before the screws are tightened in place,

Fig. 4 is a View similar to Fig. 3 of a sacrrosn rrs, A CORPORATION OF axrunsrna LOOMS.

13, 1926. Serial 154,406.

modified form of the invention with a single spring, the screw not being tightened, and

i Fig. 5 is a view similar to Fig. 4 but with the screws tightened. l

. Referring to the drawings, the tube frame 10 may be of tubular construction'and have secured thereto aplurality of yarntubes 11. A bracket 12 is secured to each end of the frame and each bracket may be formed with a pair of parallel horizontal arms 13 which project into and are secured to the top and bottom of the tubular bar.

further provided with an offset chain engaging tongue 15 and a horizontal slot 16. Said tongue extends between the members of the double link of a transporting chainindicatcd at 17. The matter thus far described is of common construction and forms part of my present invention.

\Vhen tube frames are used for wide looms such as for making 12/4 rugs, each bracket of the tube frame may be provided with two spring members, the outer of which is indicated at 19 and is provided at the upper end thereof with a hook 20 to extend normally over one'of the members of the d011- ble link chain. The hook member 19. ex tends through the slot 16 and is perforated at its lower end to receive one or more se curing screws 21, two being shown herein, as passing throughthe member 19 and secured into a vertical portion of the bracket 12. The inner member is indicated at.22 and at the upper end thereof is bent to have a hook 23 which engages the hook 20. The member 22 extends through slot 16 and is perforated at the lower'end thereof in a manner substantially similar to member 19.

ATENT OFFICE.

MASSACHUSETTS, ASSIGNOR TO.CROMPTO1T &; KNOWLES LOOM WORKS, OF WORCESTER, MAS

Each bracket supports one end of a yarn spool 14 and is In carrying out my improvements as so i employed.

portion 30 will be flattened out, as indicated in Fig. 1, the effect of the flattening being not only to exert an outward pressure against member 19 and therefore the heads of screws 21 to resist loosening thereof, but also to move the upper end of member 2:2 to the rightuasviewed in Fig. l.

*lu the modified form of the invention, shown in Figs. 4 and 5, I employ a single spring having the upper end hooked in a manner similar to member 19, said modified hook being indicated at 40 as having a curved portion -41 and alower straight portion 42. A securing screw 43 passes through .15 the'bowed part vil and the lower screw 44 passes through the straight portion 42. Vhen screw 43 is tightened in place so as to move the parts from the position shown in Fig. at to that shown in Fig. 5, the curved 2 part 41 is flattened against the adjacent vertical wall of the bracket. the natural tendencyof the curved part ll to bow outwardly having the same efiects as described in connection with the undulations in book memlVhile I have shown the invention as assotClfltC'd Wlthfi hollow bar yet I do not wish to be held to this construction, as the invention is independent of the type oftube frame Furthermore, while I have describedtwo different forms of curves to be used on the bottomsof the spring members. yet I do not wish to be held to the forms shown, as it is obviously possible to deform 3 the lower ends of the sprlngs or brackets so that the normal contours of contacting parts shall be unlike, the natural Resilience of the deformed part acting in a manner similar to a spring washer to prevent loosening of the screws.

From the foregoing it maybe seen that I have provided a very simple means of preventinglooseniug of the holding screws for the spring members, the expedient being 45 merely to strike a portion of the hook member out ofa plane so as to be normally nonplanate, the screw normally placing a portion ofthe hook member under strain.

Having thus described my invention it will be apparent that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention, and I do not wish to be limited to the details herein disclosed but what'I claim is:

1. In a tubeframe for Axininster looms having a transportingehain, a bracket memher secured to the tube frame, a resilient hook member, a chain engaging portion formed on thebracket and limiting movement of the hook member, a second resilient member having a portion to cooperate with the hook and having a lower portion lying between the hook member and the bracket, said lower portion in its normal state having a portion which is bowed toward the ad jacent part of the hook member, and scour ing meanspassing through the hook member and the second resilient member and requiring the bowed portion to conform to the adjacent planate part of the bracket.

In a tube frame for Axminster looms having a transporting chain, a bracket for the tube frame having an upper chain en gaging tongue and a lower substantiall' vertical planate face, a resilient hook member having the upper portion bent to engage the transporting chain and having the lower end positioned adjacent the planate vertical face of the bracket. a second resilient memher having the upper end formed to cooperate with the bent end of the hook nr-mber and having the lower portion located between the lower end of the hook member and saidplanate face. said lower portion of the second member in its normal state being bowed outwardly. and securing means extending through the hook member and ontwardly bowed portion of the second member and requiring said bowed portion to conform to the contour of said planate vertical face.

In testimony whereof I have hereunto atiixed my signature.

EVERETT E. CLARK. 

